We look at the division of 156986 by 204 
The aim is to understand the frequency of 204 in 156986.

On to step 1:
The number 204 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 204

Advancing to step 2:
15 divided by 204 is 0 with a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Append the next digit (6) from the dividend to 15 and continue with: 156 / 204

Moving on to step 3:
If we divide 156 by 204, we get 0 and a remainder of 156.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 156, we end up with 156.
Append the next digit (9) from the dividend to 156 and continue with: 1569 / 204

On to step 4:
If we divide 1569 by 204, we get 7 and a remainder of 141.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtract 1428 from 1569 to get 141.
Bring next digit (8) of the dividend behind the 141 and repeat the process: 1418 / 204

On to step 5:
1418 divided by 204 is 6 with a remainder of 194.
The number 6 becomes the next digit in our result. 
Result so far: 76.0
Subtract 1224 from 1418 to get 194.
Append the next digit (6) from the dividend to 194 and continue with: 1946 / 204

Moving on to step 6:
When dividing 1946 by 204, we get 9 with a remainder of 110.
Use 9 as the next digit of our solution. 
Result so far: 769.0
Subtract 1836 from 1946 to get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

On to step 7:
204 can be fit into 1100 5 times, resulting in a remainder of 80.
Record the quotient 5 as the next digit in the result. 
Result so far: 769.5
If we subtract 1020 from 1100, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 8:
800 divided by 204 is 3 with a remainder of 188.
Use 3 as the next digit of our solution. 
Result so far: 769.53
The remainder is 188 after subtracting 612 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Moving on to step 9:
204 can be fit into 1880 9 times, resulting in a remainder of 44.
Write down 9 as next digit of the result. 
Result so far: 769.539
The remainder is 44 after subtracting 1836 from 1880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 10:
440 divided by 204 is 2 with a remainder of 32.
The next digit of our result is 2. 
Result so far: 769.5392
If we take 408 away from 440, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 11:
320 divided by 204 is 1 with a remainder of 116.
Use 1 as the next digit of our solution. 
Result so far: 769.53921
If we take 204 away from 320, we end up with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Moving on to step 12:
204 goes into 1160 5 times with a remainder of 140.
The number 5 becomes the next digit in our result. 
Result so far: 769.539215
The remainder is 140 after subtracting 1020 from 1160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Advancing to step 13:
If we divide 1400 by 204, we get 6 and a remainder of 176.
Write down 6 as next digit of the result. 
Result so far: 769.5392156
If we subtract 1224 from 1400, we get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

On to step 14:
If we divide 1760 by 204, we get 8 and a remainder of 128.
The next digit of our result is 8. 
Result so far: 769.53921568
Subtract 1632 from 1760 to get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

The quotient of the division is 769.53921568, and the remainder is 1.28e-07.